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Validation of a Functional Pyelocalyceal Renal Model for the Evaluation of Renal Calculi Passage While Riding a Roller Coaster

Overview of attention for article published in Journal of Osteopathic Medicine, October 2016
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Title
Validation of a Functional Pyelocalyceal Renal Model for the Evaluation of Renal Calculi Passage While Riding a Roller Coaster
Published in
Journal of Osteopathic Medicine, October 2016
DOI 10.7556/jaoa.2016.128
Pubmed ID
Authors

Marc A. Mitchell, David D. Wartinger

Abstract

The identification and evaluation of activities capable of dislodging calyceal renal calculi require a patient surrogate or validated functional pyelocalyceal renal model. To evaluate roller coaster facilitation of calyceal renal calculi passage using a functional pyelocalyceal renal model. A previously described adult ureteroscopy and renoscopy simulator (Ideal Anatomic) was modified and remolded to function as a patient surrogate. Three renal calculi of different sizes from the patient who provided the original computed tomographic urograph on which the simulator was based were used. The renal calculi were suspended in urine in the model and taken for 20 rides on the Big Thunder Mountain Railroad roller coaster at Walt Disney World in Orlando, Florida. The roller coaster rides were analyzed using variables of renal calculi volume, calyceal location, model position on the roller coaster, and renal calculi passage. Sixty renal calculi rides were analyzed. Independent of renal calculi volume and calyceal location, front seating on the roller coaster resulted in a passage rate of 4 of 24. Independent of renal calculi volume and calyceal location, rear seating on the roller coaster resulted in a passage rate of 23 of 36. Independent of renal calculi volume in rear seating, calyceal location differed in passage rates, with an upper calyceal calculi passage rate of 100%; a middle calyceal passage rate of 55.6%; and a lower calyceal passage rate of 40.0%. The functional pyelocalyceal renal model serves as a functional patient surrogate to evaluate activities that facilitate calyceal renal calculi passage. The rear seating position on the roller coaster led to the most renal calculi passages.

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Geographical breakdown

Country Count As %
Canada 1 1%
Unknown 69 99%

Demographic breakdown

Readers by professional status Count As %
Student > Master 14 20%
Student > Bachelor 9 13%
Student > Ph. D. Student 7 10%
Student > Postgraduate 5 7%
Professor > Associate Professor 5 7%
Other 17 24%
Unknown 13 19%
Readers by discipline Count As %
Medicine and Dentistry 19 27%
Environmental Science 9 13%
Agricultural and Biological Sciences 8 11%
Biochemistry, Genetics and Molecular Biology 6 9%
Nursing and Health Professions 3 4%
Other 8 11%
Unknown 17 24%